Roosters don't just crow in the morning when the sun comes up! They have other sounds they make to signal things other than the sun coming up and they sound different.
So that means if your ever on a farm and hear a rooster making a sound it could mean a variety of different things depending upon the sound it makes.
One example is if it says Took Took Took. That's rooster talk for saying that there is food around and roosters say it to get the attention of hens because that's they're job. Dont believe me? I have proof that has been written by science and scientists.
So now you know that roosters have the capability to make a sound other than cock-a-doodle-doo and you also now learned what it means.